PIC16F870 Microcontroller

The PIC12F675 has a 13-bit program counter capable of addressing an 8K x 14 program memory space. The data memory is partitioned into two banks, which contain the General Purpose Registers and the Special Function Registers. The register file is organized as 64 x 8 in the PIC12F675 device. Each register is accessed, either directly or indirectly, through the File Select Register FSR. There are as many as six general purpose I/O pins available. Depending on which peripherals are enabled, some or all of the pins may not be available as general purpose I/O. In general, when a peripheral is enabled, the associated pin may not be used as a general purpose I/O pin.

The PIC16F684 is a 14-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nano Watt Technology . The following are the features:- • 17 1/0 Pins and I Input-only Pin: - High current source/sink for direct LED drive -  Interrupt-on-Change pin -  Individually programmable weak pull-ups - Ultra Low-power Wake-up (LJLPWU) • Analog Comparator Module With: - TWO analog comparators - Programmable on-chip voltage reference (CVREF) module (% of Voo) - Comparator inputs and outputs externally accessible - SR Latch mode - Timer I Gate Sync Latch - Fixed O.6VVREF • AID Converter:  ID-bit resolution and 12 channels • Timer 8-Bit Timer/Counter With 8-Bit rammable Prescaler

PIC16F616  Microcontroller The PIC16F range of microcontrollers from Microchip are 8-bit MCUs that incorporate Microchip’s PIC® architecture into a variety of pin and package options, from space efficient 14-pin devices to feature-rich 64-pin devices. Devices with Baseline, Mid-Range or Enhanced Mid-Range architecture are available with numerous different peripheral combinations, giving designers flexibility and choice for their applications. The PIC16F616 family of microcontrollers is based upon Microchip’s Mid-Range core with a 8 level deep hardware stack and 35 instructions. These MCUs provide up to 5 MIPS, up to 3.5 Kbytes program memory, up to 128 bytes RAM and Data EEPROM of up to 128 bytes. On board is a configurable oscillator factory calibrated to ±1% accuracy.

The PIC16C57 from Microchip Technology is a family of low cost, high performance, 8-bit fully static, EPROM/ROM-based CMOS micro controllers. It employs a RISC architecture with only 33 single word/ single cycle instructions. All instructions are single cycle except for program branches which take two cycles. The PIC16C57 delivers performance in an order of magnitude higher than its competitors in the same price category. The 12-bit wide instructions are highly symmetrical resulting in 2:1 code compression over other 8-bit micro controllers in its class. The easy to use and easy to remember instruction set reduces development time significantly. The PIC16C57 products are equipped with special features that reduce system cost and power requirements. The Power-on Reset (POR) and Device Reset Timer (DRT) eliminate the need for external RESET circuitry. There are four oscillator configurations to choose from, including the power saving LP (Low Power) oscillator and cost saving RC oscillator. Power saving SLEEP mode, Watchdog Timer and Code Protection features improve system cost, power and reliability. The UV erasable CERDIP packaged versions are ideal for code development, while the cost effective One Time Programmable (OTP) versions are suitable for production in any volume. The customer can take full advantage of Microchip’s price leadership in OTP micro controllers, while benefiting from the OTP’s flexibility. The PIC16C57 supported by a full featured macro assembler, a software simulator, an in-circuit emulator, a low cost development programmer and a full featured programmer. All the tools are supported on IBMÒ PC and compatible machines.